{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "63300",
    "entityType": "User",
    "nonce": "0xeff30cc1e73547f9ebead455f98e8bf7dad6b90623856c4a46dd070294fac56a",
    "signature": "0xa0b1b6c32f8afa8221313e4b27767d9599ef4ebfc41642fb12efe2391d1deb1470633ec88457de82cfc1c2a816622e74d46600d685b05bd993f497d1d96f33161b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}