{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319895",
    "entityType": "User",
    "nonce": "0xfe631a314e96b774fd66e77a55ed449e4ac00aad50248364cddbf81cd5e17fe1",
    "signature": "0x90b246693587523e5f9198efcdb2d136c3765a6529d8a48b61a2c9f4142f593979f32bf9f745009c749fd436e5390c63596254bdadf58ccf150cb2a82c7ac7451c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}