{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x69a19d9826625df642a6887827eb03d5b29fdcde9e450b670b10b960ced6c99c",
    "signature": "0x8ca3e3f04ac6552d5f99386249f6f391c23069cd89e5ec06f07a43cded575f932575dfcaf36560fc3d3bd96da9ef6d4d67d8908e28fe6626a36c5eb116eb38a31b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}