{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943839579",
    "entityType": "User",
    "nonce": "0x77876a0ad3c8c5f8206c5c159c01d6a4262694ae30ec4ec11cd86ee8beb87072",
    "signature": "0x22931a70aa423a3da555a81dfe6325844ef816e6f243467a9cc5384de0e8cf6d2d330cb93bd49c3dd3d4ebb09a9dac5faef2df25afd17fedc94a4dca602d64081b",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}