{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520958130",
    "entityType": "User",
    "nonce": "0x90b230023970687e982e11fa3f2046a94c92ab9d77df77a8f194238129e7a6b6",
    "signature": "0xd30cd4545230e521008e7be0986bcee7db432d36e5b68a615198b85c63c0b7eb243e935bbbc3cf3dffc072af9b40961b03e53da19e6fa0aacdf9fb93bf9f7c8d1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}