{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870665506",
    "entityType": "User",
    "nonce": "0xd4ed817d2c141b0d7885ab5d3672911b890e260b362a4e68f5bb69889e18225f",
    "signature": "0xff9f2530f437e1d777acc0d8c3480236ec7352a88d22fb3fd09ffa2e1e64ed7d10799df9ab4a26f7ee386662fd595d1c205c6193133053414ee7f1f9706a258a1c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}