{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc72c79176bec7982be4423c26cb852081d3bdcc3c44616381c11d18c82d87b30",
    "signature": "0xb6a73dc14b8477eec400b937e8db5e7cce865c74ff27670c674486253366ef386ca003c2dada9c4df0db8762e19ea0ea4613912c55fe2090686997659a163f531b",
    "signer": "0xe3219cBF0E8Ba083472Eb57d386d665A761a6a18",
    "userId": "92603529"
  }
}