{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6667",
    "entityType": "User",
    "nonce": "0xbd4bb5175910ed1032572667ee350331648ef267e1b736df4d0414d026c38aed",
    "signature": "0x5e3b96c7150ed4a3d69d566d53ae7fe9e76a80a9875662a4a71cd9f3a26a28cf11bdb65cf136965d9192dbd456f422ad1c01a9ed88345aa08317725b4d064c281c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}