{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "551298354",
    "entityType": "User",
    "nonce": "0xeec712cc8453a6991b9234949548f28bbd4988d9bef5de6ea0632259433e83e7",
    "signature": "0xe1f8e47edb34b9ec29c78a91ad498cd24060b279ca5a954814d0781f8663bd030f5ffeca95fce8b4bab3a76ab2b23e50a453d689ecd5e77f5e7ad03fbd2a89fa1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}