{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18192",
    "entityType": "User",
    "nonce": "0x887064912219c70542826fc1210a9c355a795710fe10a7ffee7102a9e6cc65a7",
    "signature": "0x2121e9342a85eaca8565d9c7aa5d4ca431c6ee838191b9d1e7a4be33cff4034000ba4ca25779eb83b6f83567bc3bac026c5a73ce6ea9f96af4c0d4489c6aea2c1c",
    "signer": "0x406fd2b6f6C6cC5622Ac1c5799cE4911D81e02a7",
    "userId": "461949730"
  }
}