{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x7b631c0b53907f536dd169e9478ed751790534cf53056a3aede56d7fec5b2451",
    "signature": "0x89651d7a4ec5399aebffd0aa0ec64d3aafe3f9ebe2eeb13e7aa051e1bec108fd4a663a921a04626cdc160c0c46a066e6dfb6d4a7305fbf9c7f35c840487583aa1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}