{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc75b2bf4bd5eada610efcd58777c5a0cdd1f46a9e716dd293cee4fee03d9447b",
    "signature": "0x6d5affd83a27a914ce09ed4aa0d753ccfff07828f339a4dcba05086932d3689b46763516770f0a55a250c2c09b2bc51fc95177bbb3d973089f5a6768b97675161b",
    "signer": "0x2a6bc249A75e034D82D1862b9C974a4BfE99f419",
    "userId": "302766860"
  }
}