{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325",
    "entityType": "User",
    "nonce": "0x71580de002c66183f16fcc575185e8f5fb299315db44e4ad2717507032cfdbb9",
    "signature": "0x22eb59314cfb2a8cdb563b57452a500606d75f4389e74e5357891362d9a46cc7561f180c79f802f1dc88ba4129789b8c295c55dc8b74a643728dac2a1350daa91c",
    "signer": "0x1c4Ee34565eE3A8304706138026D7518821F356F",
    "userId": "584804802"
  }
}