{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "451691735",
    "entityType": "User",
    "nonce": "0xf9d8b1c29bff3ee951bc20db2265f337b8d5d7f3e65dd80ca2b2a372e85bb723",
    "signature": "0x232b8d41950297e4d88df4593a098ba11575889fc366211d941ca27ae3d60b8b2d3c2ff9355860700365205c3dba610b5a45fdc7eca5b3659cd95778b6572e801c",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}