{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54973",
    "entityType": "User",
    "nonce": "0x370e078e5088ee6d33469fc0f3a5f36700a5341432cf414aba56b29d8c61d608",
    "signature": "0xd8b2c406f67e5af731dddc0b9175874af472f3cf2f4f816ccee62032ae42ea12133abc35fc7b33c57102010e678be9a4e0c719b58a8987fd888864dd27c82acb1b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}