{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0xee53fa645c6c04de01faf87ec57231e5315c9f01456c0da7b94edf8dce9b726f",
    "signature": "0x644a33768345e9198ed0d4e4bacdf4522687c2e74ffd2367c07bd3aed460ec50272fef26a61223d1d1013ef64559938361a0ab61d7a7e86e3a8f9eb87fd778ec1c",
    "signer": "0x1e9F846fdf1a89ba11e2D67fb4831B7E14ae8940",
    "userId": "617992566"
  }
}