{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x395110718f08b13812fcc90eaf9b048a3fdfab7233819e87a5a8ef6ae284a1f3",
    "signature": "0xa28d14c0e4d2099f6a5fee44e051f90148ea9cee1a30d35c59a06052cd550e7847b59920701b85772d5109d9b7f21db566df9979d1f79ec0892f4bd9f8cf9bb81b",
    "signer": "0x141Aa811b9C24fAB768B4D3Bd4440c6502F16b64",
    "userId": "152746608"
  }
}