{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0xdddf8c08e9afc9adc9762b30406b091cf54b1435086bb17e38e447af62ac3f71",
    "signature": "0x660c37f65b248ea315d4de28e8b571c16cb3c8ac7bc4fe6537db6ddf6780948c351450b2da3dd0948ec6eacd46e3fd0969fbe6879bc1b38dce1f2e4c6ed03d131c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}