{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354908",
    "entityType": "User",
    "nonce": "0x7551dc71f38b25be953b0f253c0c79c8459a3e66d452316cac9ba005bbfd098f",
    "signature": "0xd56c4f8d79c93a40b7add4dd4da37887e35c7718798021f2506be170b35ecf3543d5bc1d3093f0a91332831019ca58934f54cdb2149cd88aaccdb36dac6af6c51c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}