{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55290787",
    "entityType": "User",
    "nonce": "0x79b21dde2dd1b429d4bf3208f32bbdf0f3f19a85ff33a9730c73acde85d17df2",
    "signature": "0x7589b67273f28b25459e6a3b34d10575942c6fafed34f7e4b8df3b46c6c1211e3aef946dbfcc9582909e6bc23bba3664968cb8025c8b24968b1702af4e7f18fa1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}