{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "568518925",
    "entityType": "User",
    "nonce": "0x37513b8969ad525c2dd131f89a2649fb11650785c00975cb11f7b8bf7f005782",
    "signature": "0x2c844157ac53aa924653c181f2b0c3ee2fbb744c120a4bf17e31c8fbbd5257167725726561efe6c5e32fc540a60f786fcbe0374de64f6c8820780b79f8489d3f1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}