{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0x54bceb80704677a88c41ba5e29af75e0b4c8ab73d9e64124ce197a2801a78c5e",
    "signature": "0xa4b92aacbe5439b2bd5992031957bbebb4a141ebeb13bdc0097638da24d46d805afff20d23cbae56b92c4615449bc8e3b498c9d1c5369283918fc12157c1fa3c1c",
    "signer": "0xdd5D8856cc04830658A172827fCaC1FC99243EbE",
    "userId": "587492476"
  }
}