{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf3fb67a940b2cc3d912a65b98306e4e7e45e2a6665eb5b02f4133f46f2446fbf",
    "signature": "0x87fa54ca5ce11682258cb870912dc83299c8bbd16656155577a54d5e82c2ad9f2d8cd77ce9be05828fa223be6143770abc77cfab7bba294626eaa8d062415b381c",
    "signer": "0x19FE1be4589c266Ba0313d5eB55b42fdc56cF8Ce",
    "userId": "940324091"
  }
}