{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "721084704",
    "entityType": "User",
    "nonce": "0x09b557fc4124823b6661b6b9f5569df01777ad849f49d01638a6b2a0d84730e3",
    "signature": "0xf26892155b9284b187d681ae39476b4b3d2faca96fc77f94c4aef3cbb41aa1ad32919e8bb82d2889625a5c4c534df9cf349679b7a6a7376a9b9b9abdd0bfd3e51b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}