{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "449532",
    "entityType": "User",
    "nonce": "0x14149c733c0a120ac65501357580fb695f8f7ab5295cbbb4f5b5a3fa6f538647",
    "signature": "0xeb12e548904e8eb1b9c7629f38fe79b7a822e6979bd8d309eabd93988eab48834dafde5ab1ed9b4791a67d401af647b59ea8a0226f881d6ebe02bb3f5459c4381c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}