{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348818",
    "entityType": "User",
    "nonce": "0x78fb1910a4741972aa087770c8b9836e74b91f9ec56f2c68bb384fa478cc9c32",
    "signature": "0xf90aa7b925213457b5e8d2ab8900154452be2cef1aac8a789396183032be890c69b82c82abc3e112eeaaaa80e7c70942919011493a747732434a95b07be63fe81b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}