{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1475619",
    "entityType": "User",
    "nonce": "0x5d3156c120828be9477d13b0b51cf1ae53cc26eca3892e6c77ef552682868e02",
    "signature": "0xb3efe6d2f1fed08cb174bc621b05b27e23a87c1504dd7b80d377cdbe187c02655d040fe586dce1b0f02560c861a4bfe1d3e27ad85017fbeb49f8b7a899a612371b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}