{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "405101354",
    "entityType": "User",
    "nonce": "0xcd29e3a4654c0957679bf6f1f09321e25024fb0d405c1b8870fe4c267984a7af",
    "signature": "0x08a99b4bcd1b4d5cc0c6a23a64f379ee84f5d8b8d34267ed0551bfe45aa80b2b1a6ed315b03015abe64b906c5bdf7cbe5bc7b3277bd28129e4696db406a807481c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}