{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8d9318194ec7fefe8fe82c67e1995eaabf08a9fd32ddc91436d361e23f570a88",
    "signature": "0x91184d451c4e81b86a7a68fde9cd85396e15080a653a94ae2d276c6209f2791d5fbf59ac11f72d0cc88db4ca6097d5e0f0c55b3556af05e23c8b994872e2a4941c",
    "signer": "0x9bA012f2C309C4E91bd5fF6320B7B7DCa74cC304",
    "userId": "90192329"
  }
}