{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "595768441",
    "entityType": "User",
    "nonce": "0x60b3c5524e7ffb834833b5112d59fc50098c27f3ce225aa46e5ee74182655331",
    "signature": "0x030e63f64d12b1b1a99b6d0dad4386c5ee6f25631820a638a4523d79ed19b3181f8656750fed20fa5070cdb30da828e8a06cb37992c97088d3930c652028a00f1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}