{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd95821267c4c57d0e9e882f41f45fab9d1266f62a87ba6931f065764657c6cb1",
    "signature": "0x3ce36a632ee341c56a5f8080a1ef8458410a358c5e13e31008a0b6b898e054674b91bdd5bdba24ab5c6809ac2b1921ef06fe3283bd02bfb0f6b9da4b126ff2ed1c",
    "signer": "0x575469aeC38879f6875E4A873418767be2aC42f7",
    "userId": "690301336"
  }
}