{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73735",
    "entityType": "User",
    "nonce": "0xa7bc7109c373740addb1dbf5de81e42a253a5f8b94f805342528406f50877c2b",
    "signature": "0x45a0f5496010f51352d3e9e3555d293308cf53004d7a3001a678c71d0013844e6d2b5c1274f1bac8893111f23acc488b76bd4367f7b54ed7401fbf3a0d237a221b",
    "signer": "0xc28F39d473d5C4cacc612630A8798a119D1Bb506",
    "userId": "901788935"
  }
}