{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "191921",
    "entityType": "User",
    "nonce": "0x6d596b35a5863fbe4f68e917e67a4f280cb469985aaf41a16ca8bc387067eab4",
    "signature": "0x3d306257f9db1009e417d14b5fdafbf3f23691e9fe9b8ab9e6e0fe8af182a345596ff1c83fb0e4d3c71f88b1e41f2e88f86319b73bc0b83136279116763f6bbc1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}