{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748049499",
    "entityType": "User",
    "nonce": "0xecfdf4a8046e9b80e9d4bfd0e1db3d3732ed5e652a804f1b2e01acdce9548d21",
    "signature": "0xe5103f57d67f52c0fe810c272e0275bdfa9d70d4b1ae85a239e9015b7b91455461d1f8d70f6eb44ed9fd1c499eb74df1b44468e2e70e5aced76602fe2a44d5a21c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}