{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72975",
    "entityType": "User",
    "nonce": "0x6cfe32cd27a62b36b9a4a0983a130332b7b76aeccee174cea3a0bcb23343048e",
    "signature": "0x6d758a1b859cb66f58d6b33dd1681464828eac70d5e03f3a304241dc07753e284c284819f6b00ae43fae5311e3b4321415869e68c66fd2a9c33157d7d8791deb1c",
    "signer": "0x3Ec98fFA47eF7773803b73964753B99Ae2D50f41",
    "userId": "545926315"
  }
}