{
  "manageEntity": {
    "action": "Update",
    "entityId": "460903813",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc654c5c366e5555ef68ed7aaea65bd01f9237370f3021d9516288a87d46872d6",
    "signature": "0xf86cb7cad50ef5f7249f0effffaab683fec358b58b25d57b22ca479a2b99349d5b2c8c962c32b17c51dda2a35849d24e560833ca03a59e47cec3f56f062a81681b",
    "signer": "0x75D3CaA74fb1B4204DfEBc70D8A49758Df8325DC",
    "userId": "460903813"
  }
}