{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323199",
    "entityType": "User",
    "nonce": "0x2a12d66ba9d30e9e89cb03c29f684889f561ed15b6498d065c46a634be18d92e",
    "signature": "0xf1205ec3d64711b5a655cf462657cb61442b1fd9f4ac3e0d19ad2f5d3510d3bf7430749fb44df50a0ec5636cd5fc6e38647788c4550456d95674a34681cac4fe1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}