{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb85764a83c70ee61eea466b02e08732e2caa0f47ca3111ca6a4860a98260fec5",
    "signature": "0x9150a072330fb826fcecd35bfdd0dd16b041440dbf56124309e73dc60a10edf32f0a91c75e78398f5f0fe9711e58464ae80ed6f508aa3ce0f38c4c6f1102f80f1b",
    "signer": "0x5B59552d97CF66F680bfBd6bFDd3b840Bb2E962A",
    "userId": "577555270"
  }
}