{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489026160",
    "entityType": "User",
    "nonce": "0x5a7d799f2c61d3b7af8b695ab341408eeb31fdb981b00be8d948f767130227ff",
    "signature": "0x597f518c2c8ea82ebf332c0984616ede495a39dfb172e62ff2e19efaf12ad2d801b7adc34d481ab59497dc55a8343c38db0a17aa6f4147766ee39d588a3aee8f1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}