{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "658770",
    "entityType": "User",
    "nonce": "0x37d3c50cf718e5c54d3da801bea100bf2d5ba4a3febb5fe667303d10930c67c9",
    "signature": "0x71943b9357ad0b9a2c33e5dc7d174f542a6e2b85e28ce694fadf892975532b3241e14eed81ef6f9457461a39a160cd715403f51894fd16a977841d1e1f8a1e351c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}