{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "649127",
    "entityType": "User",
    "nonce": "0x5b2e969a4673a61f2a33cf014bb1b55be57f52932096e3ad56d7e8c036bcbfcf",
    "signature": "0xe261dbde09b89eafd6d770f3f963017d0bf6c232f3b98a223ece4510ac3596ae4f4c8980dc5263de78fcd0b71b01104b22e3d5e7e5b175dd46ce07ef9883741a1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}