{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320356",
    "entityType": "User",
    "nonce": "0xb4b6d0832b75cb98ada8917b62c601f081663d5e7071c04775d53ff8e7a61761",
    "signature": "0xc925e39094e926d6d5328b2b693cfff61ea0d7f036989fd511fdb4b429e31a34359f573a0b66e55c6c40d95c6b0a161ad3ac4ba5ead3e2e7df647f86ee31dca51c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}