{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "480515215",
    "entityType": "User",
    "nonce": "0xb4712d6405707e8a7fa419c0135e977cdcedf5957c8d6d3d068e875a2f79765e",
    "signature": "0x2f6965b10abee3a0584cd14c5ef8f2ea6f753e1f105d2d8b8d4da72d096f68c17fab73bcc8341b0cbb10f740736e3fae8c195bd265fe479a1a0adbadc4a844f81b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}