{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3557",
    "entityType": "User",
    "nonce": "0x5b940303318d969b4a67c0a7698746746827309195c3ddb6cb675efd9a0b4e02",
    "signature": "0x26eab24f9cbef8f0fe199e7f51b91350ad9d5ba6a54ac64835f96058ce42d53c3e6a2d27840abf892d7fc8ef9d2864ce817e019a50b49818fb80bcbf9f0336ec1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}