{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306860",
    "entityType": "User",
    "nonce": "0x6bbac9b4b9e8c9d931b0e849c74ae7b4de5e210d04bf965b5d2f16c54f45043b",
    "signature": "0xa88cc345d366c186e05581dd715edd2cd7174603916859ca64fea458a1e5cef36f0749819978a3d369ee92dcae2ac8572d6a387ce8f77d3f6c15512e8825f3251b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}