{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "868248368",
    "entityType": "User",
    "nonce": "0x15b13830ed617596618982084fe85cc3b207b7e5cca18744c0bfb35722828228",
    "signature": "0x4637e5ad96a26235e2a00933729f36293f34844a27ab527394f1bf5e1fd6031a09e86bfae6010b4f495270803edbd0289765b1c8bf1d846cd60bd3e13a1f6cb91b",
    "signer": "0x3765700151BA1793CFdF9F4ef4c8fECA3Ea076DA",
    "userId": "957835565"
  }
}