{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x30506a37905a37d71e988df2ef7cfc1cfcb1f47e8229579786207e2f5037450f",
    "signature": "0x4469f96e6a06a44efb1dd69b93d432c02478ab2756c66418d4b1542b61c3b9c50f8ccb78d6bd61cf4faa82b4b3cc3ee362617b9cf2460740ef02301b79ebf1851c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}