{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd07ac3372f7af999e7343f232c8e7a1eee3d66317a23d7ce8ff0a09dcae7a245",
    "signature": "0x0f2601f16fcd274b4b1c9638e4927d1a84da963f13ad1dcbde37ca5da825b1067da3c6ce78e79a548b331f37f95bce18db12b62b8bd2d018fce7d06e4b0d73a41b",
    "signer": "0x9Cc60B3C951358f13673c6568e5361D79702822D",
    "userId": "612403635"
  }
}