{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125737",
    "entityType": "User",
    "nonce": "0x9d8dd2f7914ae47647b57f22991231207cbf21ab92f4e7eb71e36719d8924611",
    "signature": "0xaafb77080a9df53c81a45e61a889123d6ba50d19974a97ef8a34cc8acb2dcb262a871c6657e67a6995f6042c2cb07e3e148b0e5f477bb11a40290032119961421b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}