{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748896412",
    "entityType": "User",
    "nonce": "0xa3b3b670764eaaec785f050872bd5df996cfcb76b5dd13fe051ad12c049580d5",
    "signature": "0x40cb717eefc35f1fdf174bccffe5b439bb0dc4c36bf26524047052c81462791924b17cf07a2a196782596074b00c77c9a65a22032d80ad95a820b3c618638f201c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}