{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x877d93c2c4a91613503c6896cb2021c4d49aaedd24813fe1865258f1313ee548",
    "signature": "0xb7d89a75ae49c6066f2148e57da0ed86dccc23154c0467c064caaee898352ea5298c3a00b046f530b98541995caed5497affcee3e4c5faf5e5d484f930997c611c",
    "signer": "0xB749d8b464D9E6C85271467Da52FF205DB489a2b",
    "userId": "585456944"
  }
}