{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a3ce09ae09bc1de2f6b2f75e5f11fa9b28293c36c3678efafde375444baac65",
    "signature": "0xb9eeb4be5209f9d30dd9797df8ad209909f38b48615efe452f58541e5871cead22894ac3029c09e2f1d4d6f9dc76271552fee474302419d43682d98a63b61bc91c",
    "signer": "0x4a5fA5326FA8D8BA8c06F330B8e7AA7A2e63D3FB",
    "userId": "685706656"
  }
}