{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325687223",
    "entityType": "User",
    "nonce": "0x730ceac3dd621cc7736be00aceb20d3dd8f257f7924b364552c20b9e17b73e70",
    "signature": "0x948a6b83be833abb195f74bc710c119c1be2d6eda709a7bd7d4456eab2abf44f73276b873c7f3bb199720a817399e6bbf18225fa28439e652ff5befe37ef19761c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}