{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "948329777",
    "entityType": "User",
    "nonce": "0x0da151e2b1cbb53d97f7acc6ad083c399b88db914ffc7106a4031371c4e55f2e",
    "signature": "0xf90077c8a51ff8592d3473e879463b1560c6bfd41d79c3db2e4b19c7f80bd7f648b42ecaf57796c3ecaea3be2748021399ccf75f178a53501ea0c1887987d3061b",
    "signer": "0xb87fFF581cC87c41f5760cBc657a96Fa1C7673E3",
    "userId": "648196771"
  }
}