{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1666731",
    "entityType": "User",
    "nonce": "0x9d2b7d03daf8bac0e1797fe64d355a0d6bc37a7ed24e11b9a4d2cec5c6056c95",
    "signature": "0x04d118478333f01fbcc896bf91312a66bf872f5e6243c74dcf5476ffe0a3d11868800d3b85ea29b0459258f08ffbe3f45ea067d556b0d865d73f154ff820596f1c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}