{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "937139185",
    "entityType": "User",
    "nonce": "0xa214c97b0b92a82db9fd38a9e855e4fa9e2c5ea7e23fb5612f5dbd737a474fe2",
    "signature": "0xce000346777376bbd6d83c1a39950120dba34f25d304719b064c30834d6ffe5a7cc8678b0592fffb07e2c4ebf705cf2e17e7bb0d23bcb2817f4c016045fee3af1c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}