{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa0b5ad7bd5e2135b3fd280563b53a6020fbecb85cf4e419b33a5dc890c4d7e0c",
    "signature": "0xef6519a8acf056711537f2d725596c5780b551ce703dafd299cda56995022952695c6206801b8127dee46e39fc82b0cb30d0cf6a95e52619c75b05a1b8f468951c",
    "signer": "0xF7caba079ef22D808d6dC773e39FE95EaDed2202",
    "userId": "618129703"
  }
}