{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "454094187",
    "entityType": "User",
    "nonce": "0x1c0b2fd92f66c5047b33f7bca56e3349c5f354e5c928fcbb2b640b03396672da",
    "signature": "0x78a9c9ae5985763d2018b5b78ebaa8abdc1d1ac44f248814c38d267fa899340833b101bcb6ba13ba7520b9408a81e0b02b9516f70f33e2c79304d270035a23af1b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}