{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "421466063",
    "entityType": "User",
    "nonce": "0xc1b1ba4a1f3f9faa01075023851b211ad9bba95a9b8347ee73b622d17ff016e9",
    "signature": "0x71879ba7eed85b46ce28a2f62563d192a0737564de07cf034f698e57d6a072b05bde233bad613ea86180a911e799ef1bf2d41f36729d3484e35a44bdd0133d831b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}