{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121646",
    "entityType": "User",
    "nonce": "0x1fa5c97f53c384196ec1cef4a372a396568291e881f0fb31fad99449efdbb78c",
    "signature": "0xd4738707af732ef43ff7d6c57d1f3d6e140901cf72e01dc7e68fb9f5da8d11173acd78195fc0c66a99f05514c0527fcdd6e1b3a48040e7a97c50373bc42d3a471b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}