{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0x2ae2b32840fdbc589b547e0ba22ffeb6bb66b5600ebf11d502add3a6078a00c4",
    "signature": "0xfe117657f9f99c42be9a31a448afee7616a61e1ae662a438a9e74208b6cc42de26e995447e51a674eb52e995fc071623b2685a0bb531c86e14f0c1a3900e1c731b",
    "signer": "0xd832cDDE8Da519b6aD56d440c66722AC65cc18C8",
    "userId": "755155896"
  }
}