{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203752",
    "entityType": "User",
    "nonce": "0xfd6df0f8bd94ef71c51eaa22a8e96be3ee6f39dd8a3a26958badd52398fe6bc8",
    "signature": "0x7381d79c4370ef71a38ca89f05089e2cde1dee8a27d143fd569ac63ec02a11ef7bf454a59a0274b7a55d8c9a88b5bb1779121f6027cfaca0bcbd576a42dde2411c",
    "signer": "0x30572904F7B2dac7C9abbe5216f5Eb6D632Eb89D",
    "userId": "789393623"
  }
}