{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x87117a0d75fb93d191e5c0b616bd6568877b1374a21e4b4932dbe69dc5e22e80",
    "signature": "0xca30f5098d27873380743c57a974b8da995caea991999b0f7335d992d15a5afa01368191c2c087117506db461a0477bdbf2aa5ed0a8c5e410bb01fdc370c1eeb1c",
    "signer": "0x2acBF90b188BEa0e543bF348864E8a02E3814819",
    "userId": "969601314"
  }
}