{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "573414037",
    "entityType": "User",
    "nonce": "0x3d42265afcbc2ddb9ca843a064e0ecc4075fccf87d9192ec77026f523d4478e7",
    "signature": "0x13efed018d284699bc7d5ef5e61c9170734252b94a95ad72262571e78a21ac021b2c2e8c6b184f42d13be73f8744791da0f39ffae6081e7ec32ed938857e1d241c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}