{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51842",
    "entityType": "User",
    "nonce": "0x0260f4a16ff2f8765122c62da10376d23ee907261da25d1f7d0400c7ddc6c05a",
    "signature": "0xb6d963d895e383c60fc26426d8af621dc7ddfaf0b02e55b1cf2d1fd5fc8a70f74db54fae57fb271b7f27dcacaa4689faf31307c4eaed69abcf03e715d45eacd91c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}