{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "288873",
    "entityType": "User",
    "nonce": "0x9dbff3ea79f875c2425467d0a76d341700b690aec47ece313b5a84ff5b808fed",
    "signature": "0x73f2b34ee00d8622d5cc2b540430000c221dccc43a273ef0d80574b9aee9a24b049f2fc5b1efd4bf0d20fe26d0ff9d629dfd308803cd99ee4a77f1f43870390b1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}