{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf45d41b767f0fe8bbcf278cc5ea721c96cfdda54b42d55b6a4d4a9d99c34e7e4",
    "signature": "0xc08cc80e61f0fe2214d1c98c366d96ca1b854998243a216382d77b4a95204fcb74bdea37ddfac9d82a5665edc0f8987fc3c730b26f9f4f8fd31d0c7d8e5f4bde1c",
    "signer": "0x1ef4f2764434B03864665be867ECf5FA5902e3F8",
    "userId": "928487182"
  }
}