{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x680adc6d21ad7a1085e30e26e67dbfcdc62e4a6025614e7fcd5546380095c4cb",
    "signature": "0xb5dd642163efdbd0e11f47e4606ccb3aaa38718ea824922cd15c47ceddf2e1ae2d3432a117de4167f1dc67fa258f82886496bb4f8d2cc8840dcf335f4d34d46c1c",
    "signer": "0xce5780555C00072aD3D685A3067b4C930EE57f22",
    "userId": "906055609"
  }
}