{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3e842e1c498b233187d48570b90802d2ffb9bce663bb15ed6627b6f7949e238",
    "signature": "0xb9884ea8283f2c8a10b2cb85d7dc7eb4a6434a287fe2f25639ee827a2e3ac48c5da77d87f2e95dda6916cf3fa5d4214c1f160c3cdf3b9917a16c931c0083e4631c",
    "signer": "0x9D360ECE27645E249fbb45fC03AeF953A81031Dc",
    "userId": "579726392"
  }
}