{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "900758146",
    "entityType": "User",
    "nonce": "0xd84ea05d1186e8d2a789ce4578231453f03ce167f337fd4667ee3d2a1f1d1ee9",
    "signature": "0xdc7bc8af8c36ac3fc2f42f9c38927a533aa53081dc5906b23d5dfd7755061a264dbde3866859b51e76f4bb3d875dbe90bf16c6f443b9b0fcca322dd25b7e9ef91c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}