{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x402b5daed1c21890889dbcc20aaa827223170e325469f9582029dceba3237fbb",
    "signature": "0xc7a83fcbbd6079625ce00ed036ebbb293e55f0e11dc892c333653b6171991244406efc7e125e9163d320e58c36f858df04e9e6935466fdda22920cb08b30ad6a1c",
    "signer": "0x3b712C16275eCC8Bf894d014D9CEBE5655F55117",
    "userId": "263108493"
  }
}