{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8e5cbd9ef4acd354161f22ad56fdd95099dcb23bb89854887c0e2f13cf84bc8c",
    "signature": "0xc963c3689e5db907b57ec1d8b89e32a0e78aa61b809999313a11543125ecffe314f30a6d683422f702f127a9a0a2fdd9f31580312defd113863ba851e1c193251b",
    "signer": "0x21c1b9F1a86E51AD8642311E60C35862D7913fD8",
    "userId": "125131485"
  }
}