{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "168777",
    "entityType": "User",
    "nonce": "0x8f225499f6e5fa314e7604005c177f0c7d84f337703d91ce8754fe67d33e129b",
    "signature": "0x1b10cc9404e59220624e1bf8cc044ca6bbc1f025d0097e47635bea2f915a98b8663c47db7c24546ff2fbcafefa9950f1c8fedd1d14e3eb1a11426354f42171951c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}