{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17301",
    "entityType": "User",
    "nonce": "0xf66a25c344aa4a15df860c5cc3aeee573bade583287f588bd04dbe747de5b5de",
    "signature": "0xcf53727d405c1660ca46e4b40f86e64f74b6cd8dd3e9f4d1ab23d4bca00cd4b1609319a4d75267ff078a2ad5ce8bfe0247b9a294910e365c99695e647217bd9f1b",
    "signer": "0x7fdeEB144300AC6b1Be0E83d8f006b2D3140F73D",
    "userId": "325377357"
  }
}