{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142974",
    "entityType": "User",
    "nonce": "0x734b54bb42c0f6da5c045ba5f50ba7660d75e7d613f100370c11489d3c071868",
    "signature": "0x206bbb69351e39cef9b6595ed7b5d9b53deb6e7999e3a60c7452b36749bca23c0b8f3e9ddbc88d5e12061d7d96af560ace5d2b4e2760f9edf67fb40a82c5c6311c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}