{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4c1970631f17c4850cb3706b0f90bcd8b30fc546ecf4a541ec3fd691837c1eb9",
    "signature": "0xaed553064775b61f8c67463da7bef90e17e38d555669f4c146ecb500cede691e61a35fd38509918ebe2dcb781ea378630af96be50b20b43d3cae158bad86d1801c",
    "signer": "0x2a2e74e39b471D87bcfBFc73f6A403ee62B9B227",
    "userId": "856623252"
  }
}