{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0xffa827374ce5d06944e9e2868b0a28b549aa18b8b69d66654c5406e2abe2d8c5",
    "signature": "0x24b9dad3ebb605be8c5fb860a75dbd6c9fb91a73b2204f378ad13cbcb7e4eb5e7171aa019b7e65af5b65c3183ad9bee9dc97cf473caa7875cecfdd39400d4ae81c",
    "signer": "0x3D4048c2A029Ea1dD4f6943b7A8D10070a4E726e",
    "userId": "669982658"
  }
}