{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "240510",
    "entityType": "User",
    "nonce": "0x3bbdbee45ab07dae3c8a96bcad4510a6e3554bd9b54e02b130b30231d43f0343",
    "signature": "0x58172421b5f8adb43aa3a116ff257ca4ca1ca4b0b7a5bb1f5283473846538d3b6db939eaff10c550b884e6f12899069485a5591f00b96a723a8c9c57933dc9a11c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}