{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "558452493",
    "entityType": "User",
    "nonce": "0x0608bca9488ac56c3283c07af4573034b22a1293413ad4708977397eeb93f582",
    "signature": "0x81aca484fa518bd78df086363aad21f1ad00f529316755ff6527425ebbda297d78c8acdb191dd46c6b95c792558fa20102d8fd654e89a01eec28d9dc0d30be391b",
    "signer": "0x6Af6D40d1d0B48D79D2bd3E3c8f0a45540130c0F",
    "userId": "89433"
  }
}