{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489026160",
    "entityType": "User",
    "nonce": "0x77616b3e0637145b263cfd3ccb3d9cf0e1a4cf79031a420ef50aeeeb17a8d513",
    "signature": "0x8dd850e7e73476600e7d41f9eb6c59e6b5d3ae3cb97504885206d84f82cab37b2420a57efa5b5b78f47acb67d2c4a5a60844dac512d39ec296e2513c2b6f1bd11c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}