{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7869",
    "entityType": "User",
    "nonce": "0x5d916779f984128b30a98099a240a516f9b13e2b318a168d7de2811906fc83f0",
    "signature": "0x02bc9fb7cbe71d72defe17590be3df7b05986a5d7cf4cba3371f3c72daeb86071180d1c3a1e401f2102e26e543ac68dc142f986a6765a2c5923b566594f840571b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}