{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "230985",
    "entityType": "User",
    "nonce": "0xec40760da97147bccfccdc9e407859500795e73ed9785d72bcc2d0354029f894",
    "signature": "0xbf804aa1b2752f628399d9787f2aec03895a888e916865dba0d9e81f8e2358c832329a29de504d22c977fb947d7ee7fa91c84cdfe2941e7fa6e6b66c47c1145d1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}