{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "302385956",
    "entityType": "User",
    "nonce": "0x8f18619ee0d1ba70697e0eb7bf31b2a4a6a15ce42d5310f4f4d5cb849034eec9",
    "signature": "0x2f932474438f8d0b67a0cce2ce39f215867312ea381e3ad460000aac6eed486e01495da9a72712fcd7da1dc9af9fd143300f16dbea0330d2db056208b8abd9421c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}