{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53500",
    "entityType": "User",
    "nonce": "0xb63b0c1ced3b6575c7e6750189fee05a5a8bfa4585d396e0b5a831ead70b7a88",
    "signature": "0x5e45ef6d1c01b819cbcfc24247e1a26cc84d3ada78b9b980095236c34854eca115b1bee5e7e1a717c36187329705201f42f6cb1afe1d9ec2670c51a9a907e1f31c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}