{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "587108786",
    "entityType": "User",
    "nonce": "0x7d034ea88e5bc69f6f5dae422b90b794a3ad8cb0ba8ab908b50ca245e11b6b4e",
    "signature": "0x339a9c48a09dd08a9ce2d4917fb265c6e4cf4f973e883b82f9606454fe6ea66c53abd50318e2519f1fc1c1986553fb37749c5884f81e2c6e8b66be89ecfd63521b",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}