{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951995708",
    "entityType": "User",
    "nonce": "0xbb9f763af920d037945a24f552ae7a1bbe4ce5af1c780c39047e754c7e846379",
    "signature": "0xb3cdc42141e7d6f5f7fca909bc61091b6859acd42f7242549184d65e70858a342dfb01730b27d83c4ae43b78b4cdf8389f4e197b4d6ca14a740471ceb0ae7ccc1b",
    "signer": "0x48997477d821e30d3Fa835d1Ee7809B3253Cb100",
    "userId": "75085"
  }
}