{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x99c60207f7cf60bd34aabb20f4d7d617544f8644e8c99b3a77713462ec66879f",
    "signature": "0x0a35227339a0904f53a4fa2b57293bc3dea74e0462ef3f338c6679c128a19c2b49a294bb56d6b039db7e618e8a7dc28d9ce1eea3f858aa774bcd827b8aad46e41c",
    "signer": "0xb3A9A4e99106cfeb4759823E3BFe3d3CF3eDF146",
    "userId": "748490297"
  }
}