{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x69c210940f11bbdc45fc92113776daf2ef31113acdd9a5a4635531c143ad040f",
    "signature": "0xc39f45f5eb2486bc1dbff204de1c6afe0794810058e038eba94c0bebed3eb4217d4c50c6ba3a4d1e13a1cd77cfa170719b793a153ecab7d7329e195e2d6d77411c",
    "signer": "0xF1ee478e6A5e6E45737Df82386F6bEdB0d1E64D1",
    "userId": "322191727"
  }
}