{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5793594b3aa46c5087045a0e85c4047007ac9df279963bd2a3c8cacfcd7827f4",
    "signature": "0x43cbc18c7ee317d477191535fe2eb7bffcb0ec4b72acc94f78e80bd8c7c9c1c23bb0df0d1e963a37745fc95e9643f7803e6bfbdaf6102bc4c24102ea1991c1bd1b",
    "signer": "0x854c4A8686DBF9495A2D65244b72C4A0c30628d9",
    "userId": "920432305"
  }
}