{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "490478463",
    "entityType": "User",
    "nonce": "0x05ab67f266442702ba992249272a7f955f2a3002e2b887443ad083d551e9cd27",
    "signature": "0x348c0b7e9f3d7bfbb2c2f292c11940e45a27c974f4a65f01a3e7083ab3ea05847f8d7ae7896b0fca11d2802b3236f4b91697377ffa3adb9280e06de929025b441b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}