{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "660",
    "entityType": "User",
    "nonce": "0xb9f54ef2b309b77048143c3f6105c02ea8de83525e66f058d2068345f2a58105",
    "signature": "0xe1d2f809ea2ca1eccc28116b0a7ca2bf0b0eb689165ec42be6702102a85ba2286785ef3c70d6841ebce1c66f2f66570982e508165f7bdcab66a294229ade68761c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}