{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210972",
    "entityType": "User",
    "nonce": "0xc9ac83eeab6f529c1a56a7d830de98c1c0828ddc18a05743a6f848c9fe0a032e",
    "signature": "0x7b4d95b428b95adffb9f6a6ad0c5c388cf61cca58e996c7b65c41e09346bbc261b24072c71e2d9e4f782462af5600310623112227173587b450547a3eb4a286e1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}