{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75675",
    "entityType": "User",
    "nonce": "0x58430826245dedd9a3d91eded42b4a801560c2fe431afd34ca8b22d7308bfd8f",
    "signature": "0xa822d68f7c0decb2df757e489026c12738fb5258279af0a049f0ced138b6bf4363cd70000eb303f08551f8239743f422c1c678667e60390d57676d6c35a767911c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}