{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfeeab96729a668391e1bfb2ed4154df6c9a7c823db4460e407277af6d74f2d2d",
    "signature": "0xb7192971198096c9145f736cdc1f144a8de7d97ca8be8f169750694a6156070c40f2c628fe7d955f86e594bf4c45b0f82bbc2c87149b16a393ee1dcdce7f0a261c",
    "signer": "0x29Ff1645fe139feAD6BE7F56CD25C402Db9d4dB4",
    "userId": "863212457"
  }
}