{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "487755133",
    "entityType": "User",
    "nonce": "0x86f083d67986c24c8f63794b5949a656125e2ddef1d10fd972ba9910decfcc0a",
    "signature": "0x3446b9c241cb0bb0efa2706095257d57184022d506923019af4123b6331b2dc86d366454e861dd0cb7a94b320a2f41de66ad84fe1f25b675126b79fa059ed0221c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}