{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x56ce3a921f3967991dc56c725943c3f73e8348f4fece1c0a3ec6d110ed1f778e",
    "signature": "0xbf832d0e4f4495ef7dcc1413b77ff6910dfd58d5d3cc38bf3d3037513252f6b470e65e8e87d3c22775e809c35f9231d60dc08ec923d2a8f39a1e463222f31ce91b",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}