{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x23f07dc603e8468dde2d939505e20066efb4512269c45d3eeb2147c53a380109",
    "signature": "0xc1324526ebc589092cbbb26372ff1728e71d37bf208fd31fc0944d31d639948f6f8b76cf4622dd24807cb3a9f2938c88f71dda0d9f835aafc0d60b536061ba841b",
    "signer": "0x0513c7030748324E894e7434Dd71A16D95FCae27",
    "userId": "819827554"
  }
}