{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "966670393",
    "entityType": "User",
    "nonce": "0xc5858d127379e4de348f8d8b86c2037e031c390a707cbdcdb98a81d66b4ed47b",
    "signature": "0xde4a7c160344ab326f41a694c4dd332d55ad1c015a7962d238f4fd60d684e0da7dd54b9e7dcd0b586cd5d732e42745de7468c8992f20bef87fd06686473a655d1c",
    "signer": "0xf81247fBb6315ab8e4538662D28575DB9d429C3B",
    "userId": "879542806"
  }
}