{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8819",
    "entityType": "User",
    "nonce": "0x85386a35df8a1c8c042d009b62a598d83c8bc972713c0dc91aa228784711d3ee",
    "signature": "0x54513eb7ce713a0ab2f53ac2be274a2a98c3fd7143fcc09ab28f3dd42e49bbe05759e008c147785ff7f8974cabb5d08abc1f300adf03c29c488b61deb827da4f1c",
    "signer": "0x3E45B1bA0243f60107205fC8F9971c58d64Efb57",
    "userId": "415050011"
  }
}