{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1854579183",
    "entityType": "Event",
    "nonce": "0x8948ba2d81c6d304c5d456fbd31abb4b00a8a7fcc8c7d54d884243cb16036bf8",
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    "signer": "0xD1E0F0334a120A263aa8f82c802608a0D9C22de3",
    "userId": "7886"
  }
}