{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200140",
    "entityType": "User",
    "nonce": "0x3ce20a77334091f9d7d2f036b62fe73fed857033be7f5c702d9aa012294f77f9",
    "signature": "0x9a3737233ee824d9b1afccbc87af3fbde8ce0947f8c5f5f4d6badd0209d22d1a552fa2ca335f5ab1ef4507adef42533509554b4e1852a63041bf2a42603dd82a1b",
    "signer": "0xF40Be525727aa96Cf61609f0A493d9E677f73a33",
    "userId": "159460377"
  }
}