{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "338569",
    "entityType": "User",
    "nonce": "0x82a7f935e5cddda337197124a5c28cda7cf3999905fada80928b00872f9d2b38",
    "signature": "0xe3317f849e093d85009a89c5ebd4d051434d88464405dfd106e7919768e09f5c19cd06262e694429dcf8c503b7f58008d48459ccbaf6648d6d20e1e14cf609431b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}