{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5f5c99ee392c4570b6c52ad58b736fe6be303f449ec31a8802af2a5c4ba9f96c",
    "signature": "0xef768621565d9c60ed13cd1856ed6ecb7ac36d670a5e269b68b4595a61ea0ea142fd06540c11c92dc7e614ce4ddac112c12e8253ff9301b95fb47f3479f47c271c",
    "signer": "0x0714b139b207B8c3d45286Cd2B72a5d41c465029",
    "userId": "724438294"
  }
}