{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355113",
    "entityType": "User",
    "nonce": "0x521ace8b146e81a62e9221782be86e4823cda32b9ca19e2d85b02fa4e8fa5977",
    "signature": "0x655db0d7031663feb0337691f126eb361e78a5bd16a491bf2af647fce4c270843980373ccc37b342f142acd34808041b8250b20b5247ef106427513a6373a8711b",
    "signer": "0xF66719AC0E8463f8c9660B4412B4972e1dB48183",
    "userId": "57021"
  }
}