{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x04bb41b591f15f238644da58bcfcf203824e9b82b33b50b0e9a71d66b7c84162",
    "signature": "0x125070c7ba9953a6c85db1af6f1a5377d7a187a5a3a14e4bfa39bc599d44f6212bb1cb77071b1bab89be7bd1b8b4ebb302fba3d377d4ac82aec7bc9d30fff9bd1b",
    "signer": "0x013fB1A352e0F0347DC6CDe9B994B034a9DD23d4",
    "userId": "491726175"
  }
}