{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd0f61c3a7d8014d977da39155803d49bc09633b1aa6094eaf5940d8355eceb74",
    "signature": "0xf155672caf713dc1b7ed980292e4382b52ec20e6a62e80fe850e356fe91180a760f4ce388c027af8aa598553d1146a1f4cb92ccb336c9bda93cceaf6c5f6a5561c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}