{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15050",
    "entityType": "User",
    "nonce": "0xfc6e70c1b8f374ac2462617fc66ae86f99a65033563d09fadbdeaca93a92202d",
    "signature": "0x4fe636a4162ac93e5edf3d36e07f2cd4bbd1b49ae1db1317c8a23ab3f370f559703cb2455ab59f3f584956fdbe334460a0c52d201be6b4312b6c8a7f61fc30d51c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}