{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc1d53c63c0c5b2bb72dd90a23ac88c5bc3153a6419fde861d679c3330f0e7879",
    "signature": "0x26b11364d015cfc5dd02cbcdd007b4ce884aa93cb82840af4cdbe16d0125db6b0f37ef4c638a6cbea7e0b115995b8e6e0e2b2dc2ebc7a37bdf1bfe4cd1a66ebb1c",
    "signer": "0xe45f89E2286b04cb9A2Fe2260cFc99cA98Eb80F8",
    "userId": "575352654"
  }
}