{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18122",
    "entityType": "User",
    "nonce": "0xa28639d5b2227c0eddbbff07f7abc2061a6223399eef85c628bde8b83da4bbfb",
    "signature": "0x834f88d607c11543a9094412040d313e70e2b0a022b5b3e737fe64a8570aee2c1506ce958a51b9637e97f95803e6e7d919b1443f37fcb0adb66bc08bf10f1c3a1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}