{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308558165",
    "entityType": "User",
    "nonce": "0x5422f87c1ce02a1f45186d39941b0e07c65b83c1da8d1866623f7bf67ee4756e",
    "signature": "0xfdbdf8839fae6990baad6907c85f7bc3c06bbc9dcb60632c7acdcdae8e705a9c58a907095e2089203480e4f1b31821c288044c5715be67d9dfe760aa31ae2afd1b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}