{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "674606722",
    "entityType": "User",
    "nonce": "0xa6ee471b3fe60f7af7dfa209e5b7fd035fce10f90697f5ff51da38e5d5a7e189",
    "signature": "0x93307fcaddaf3579df5c297d03b5657be35a92e73ec2d26ecc5e7ab6d54744d47a5a2d22d36480ad2ff511656eebe174195eb0a194839eba6c261917b7884b221c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}