{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "336388",
    "entityType": "User",
    "nonce": "0x3dd5a461b70e71f3ca4e43b4e30dd0e62c010ea486633d53d76dc817bef14393",
    "signature": "0xbb71c2456d2e0a2e4c5a54317252e7ce71034b3834b16c15d43b550f30a7ecad4c754cfa4ae84c5121e809b206309480ce0d33fb50e95b8e073ccf0b61815cab1c",
    "signer": "0xe74EA561439c78F34f4928Eb44ee8Bc5d67c3d45",
    "userId": "781858883"
  }
}