{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3b157f3f63222cbea6c4851e3746eff34149bf78b4b3a55f23801fd064cf0fac",
    "signature": "0x48ea5b18323603635638e0c1c4fde29e67a5e3f3f84aeba7f267d4e74f126b9c42faf64c9b9750716738b1e4b5a8ce52ac03f5626c8a643710e2d966620ecc321c",
    "signer": "0xbf6Ff2edf7a073E7aa581c1C1286c7e75794f615",
    "userId": "457641713"
  }
}