{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x2bba7846c645242fdc075c215ea79c379b1cce21a14e425962b4428e332295da",
    "signature": "0x4cce500e18d9915fca0736eaaf0b9f646f257d5e11ede3bcbd2d2c70fa3374f03e1796d0e4d7a9ef4782753442a063ed902e336ebbc15dcbee7c6e34c9e0877f1b",
    "signer": "0x3eB2456E017b5679f587801336BeE9c0Ad251858",
    "userId": "393411353"
  }
}