{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x163164ef94de4c5b3d3c4d3065b331e53008bb0ea8d22eeff0eadfe8a0c91415",
    "signature": "0xa387facb0acd0d1da8543e39783c56ff1dbc532d09236bb9b3b954c51e3a4d9f051c78f38129eeb33fc53d44b2ac365b17e7ada9a6ec6748f040e2a41137e6391b",
    "signer": "0xF59599790AcF42c0FE746F5DDa3A9cc2AB86327a",
    "userId": "581003495"
  }
}