{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5b80bf941e7f5fc1e8fbed8a9a722b8bf5c64df962d938b1087b5825fa079017",
    "signature": "0xdd8b0ff1bec0ebc4b9b755ade3a8d54277e53ef167b99262d7762b87471e018073ea654e8d59c3b87f7a7bee9e77df257056ee20b9a092f4aa051e8522420bc31c",
    "signer": "0xAaC78cb31D6936b7f0E936C8550Cebc27d072b1f",
    "userId": "747676740"
  }
}