{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "375612925",
    "entityType": "User",
    "nonce": "0xb8397036b61d3e43ecce35e21e34faff4646b04973005c6876fab710381999cc",
    "signature": "0x1429b89e019bac1887cc5a35559914282e048301967772c43c386574d2e3e36c4200cea67db6589229e11d6789adc4bbd247213b4840ad0fe8c34860db93ab391c",
    "signer": "0x0E6Ef8dF2F401D8918d603B82ef321D94A721556",
    "userId": "648802251"
  }
}