{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138477",
    "entityType": "User",
    "nonce": "0x8f442a4aeeb3b66136885dfd6b8066b0ab251751ae544291d23d9135fcc2d8cb",
    "signature": "0x5e52375006472b863f939acb2f2f9779ec9f010666202b3935ca1b702f5373c04f06fb273f2c04146f5c337b83f5c41158f078330c061c7f5d0a2d6d07b0303b1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}