{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "259898514",
    "entityType": "User",
    "nonce": "0x65578732f1e4fbdace93614beefa640a55a569e7c625e62206710d67360ee276",
    "signature": "0x0da2519c691d44ef0544f05ffdeb3b4ebe4537ac725e59164e684d12bcb320d50331610407584e1d9a5327fcaaddc1191fcec07283abe81cf3b3665babe0cbe41c",
    "signer": "0x5C07E6dEF1CE3e13F69d1F6cE24aaFA2871bb130",
    "userId": "547554416"
  }
}