{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "157194",
    "entityType": "User",
    "nonce": "0xb9d1461f1f009391275ff58638802b1285aff2903f497e6d04ab810ad5898de3",
    "signature": "0xe53beb5bded368d2eba08771ea08ac1a98f6d33efb9cf21b63a06620d5a0a32f5c89897ca197ff2febd2f891aee68427b63c89f659e381e83239dc611c8873d21c",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}