{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74647",
    "entityType": "User",
    "nonce": "0x88548c274d01769feee9ac90dc9b4b7ebb79eac5a09f9a99c97c871b1ca2c20c",
    "signature": "0x6d6424c4e0631744c6e9bb30f851a24e5ce08291edeef6b0a63671d050d4a7c863682718721c23de64ae78396ddaa778986929b8c4b732647ada3ade0748d2af1b",
    "signer": "0x12EaF77464824447aA995e75Dd707B3e5246be9C",
    "userId": "409175645"
  }
}