{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4756",
    "entityType": "User",
    "nonce": "0x28d1e75b0fb13573ac702e0b3c04d9377d1b943434a655570b0790d4ff67f603",
    "signature": "0x5caa270756342caa8a77dca0a1234b292a238908c27e713345c6063bb47bb89f6211771a5775b10db135ab0dc71bfb455b3b33e7f4cbc9b910667f6f8df1aa471c",
    "signer": "0x37C656432bDD87630C13F60036e9857B5ee36154",
    "userId": "288167767"
  }
}