{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154377962",
    "entityType": "User",
    "nonce": "0x4dfd09e7408b0ab9063965b977e8dff95b45c9aebd1ce3249a6bb7755b6e9b0d",
    "signature": "0x3e568371f0f94d96026f9d774756ab1926b8af9639af591d83207d7a7b467c2c530d65573d6c671c62f25ffdd1bc2e74c8f2206eef0dbcf284248aa75485248d1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}