{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "609847193",
    "entityType": "User",
    "nonce": "0x5e2af22e54626993daa933327287e56109d3e3c0e3cd01aaa2e12421a89de16c",
    "signature": "0xfdd1313feee7aa5299c90c33f667140bb726cb8513b94304c750fff5812ca3ed7c96c06b5cb9022d23ae54427ee82b0014a759838c5a08d732945756c100e8141b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}