{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "450249739",
    "entityType": "User",
    "nonce": "0x67d8f3ad47b928d5187bd758bd5d982bea6902076d672abe7c8021f4d1a77587",
    "signature": "0x955e7dfe7dc408fa4d2c2f8259f246422150d684831b16aaaadcfda13a243b453b1cb2292a80b7294d7b6a5c08a16ae184433ab88d04bc3d8689f844b3b6746e1c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}