{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc80753ebdf1abd47e29d0458dbba7ed8e6c52de16d45b6147185f25939dac4b4",
    "signature": "0xf20f70ee820ea5ebee1b1907ff5d4f0b9fc08d9bfdd194f434886217c61b5b0c6a4c18cd3db8ee460cab8495faa463131314fb65e6890b0944e1631347401ee31b",
    "signer": "0x3Ec874F0E3cA07198a49CA56643169d0D5f608B6",
    "userId": "136913641"
  }
}