{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53770",
    "entityType": "User",
    "nonce": "0xf6e967ccbcdee4b46447ee3e08c2247fc96850193f66d762a61399e272fae0eb",
    "signature": "0xad2f6f45c0747f897f5943aa158c4dd560f6b4ff208da5ec18e39e527f65554615f7775145c42c90ed8b1bf93085415455499eb1f3e0285fafee31cdb97261fa1c",
    "signer": "0x34a55C466710c320347C9bb5Af1d24DC9D4C240f",
    "userId": "321784073"
  }
}