{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667906",
    "entityType": "User",
    "nonce": "0xdabe61f9ff18d861dca12f1909a3a015d5d0270d9dca2bfba4ff3b6601286c9e",
    "signature": "0xcc7e40dd6c0ca3f7662652b55d887e317d7ffd11c16e095b40e68f80f11124c13234adc4ef5575801a7f738ba33207f7acded648b4afc3561ac5b5bacca690521b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}