{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "719833",
    "entityType": "User",
    "nonce": "0x758be32ef81f6d4222964988505ffaa55f8fd99cebd9ad1422fbab2a9031f51d",
    "signature": "0xce98397058330c93569a36bcc2edb5c73ca779da670d7f501757496b8bcdab1b0daf99c6cea0da22b0d426b4d672061b9e6db7c7d775f0c137f97c6cdb2ae08a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}