{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28857",
    "entityType": "User",
    "nonce": "0xe7ce3cfcfa61fb6bd157c12565d8e6d61379b62d8b33b0f4c0ca8bcc3b928776",
    "signature": "0xf5bf37fb7fda410a04e11f3ec84a6533d8c6443550b4697dee4c4814cbf944fd4ae7bf3a2668488c690cf29bb109128d81061d08425d6ac9102866210d72691c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}