{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51449",
    "entityType": "User",
    "nonce": "0x1e374e951a62ce25f51bee3f9e2236dc25b3058932dda596f749905978d2f955",
    "signature": "0x19b0f07b2a4fd8f12900e1ac001ddc9e384acf1d579164be8ba0bf027493566052ca61c6d3dfd5c23bb4937682acf97dab57ee5c0828c85cf3a92f42480a4a421c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}