{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2e3066f99b8fda8f345944d3a4fc583999834866eaafcea4eb0043df4c80f41f",
    "signature": "0x23a07b982985508daecf1ec650f12cb24df66826e29ff9b8fd7d61b645ae424311eaf31390adff33014f863ec2f7c817bc89e53f988f527e5d81e4e19de2e3a81c",
    "signer": "0xD65e51a58F637B0530F62c9ac0343D730e4B964b",
    "userId": "527464736"
  }
}