{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x166161f40e64c18129fd2c7cb67225fbeeb956e63abd2d5cde2d23ab9042a800",
    "signature": "0xee64cd25c45799a2d72b6d81958705f5c60bb25c185cceaa69a83e0860179c5d169cd7cd82e6083a55ad890c37f8688f779934001c0cb01dc8d17301f94caf391b",
    "signer": "0xF1Fe2D603444791D4C3f925bc1507D497BF6140B",
    "userId": "281439246"
  }
}