{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12570",
    "entityType": "User",
    "nonce": "0x5d1694985867ce27e74b25ea95d722b5dd7fafb206f08d7bf5fa27afcf8991d5",
    "signature": "0x6e8170f10b2e126caa5e3218e70866536acdfdcfe0efc2b54826a42df5fe9e365a7a41a75f958daf0f080b3e7183b47c4a3840610157b79bf726b1515a9e2e081c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}