{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x83f4b7312455e7af53cddc58cd89f289c5428aef301b741122f7e6c87f42bd93",
    "signature": "0xd52aab08e09f0be3955bcbc858f1d366897b42308516761bf1e390e8822b912a56d6976d5d14907b0e5baaf9ac0929816d8ab8f777b009ff697f24506ac830ea1b",
    "signer": "0x3107eD9fc80586B8D3314FE60dc8fE1250CB89d5",
    "userId": "575941305"
  }
}