{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7521",
    "entityType": "User",
    "nonce": "0xfe05a9a68e0dd508690d936272d42a8cb8b304575bc92382d910faebc698cc70",
    "signature": "0x5835108aabfed5cc33f6b879d3fddfd9000815da6d1376edf630dedd5eaf5b315b77ef67670be64b120d33e8a54ff1c5f79c6e40e8b7c44910d380a31f6879691b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}