{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "40531",
    "entityType": "User",
    "nonce": "0x5c8766deac15bb358c74cd961e4a0171f44682e09058fa97769af75ff82af060",
    "signature": "0x78f413231fc2777527c4a5c0994c3d577c415543f67e8ea65ca1721289274c630c6c75d44bcbc3832062d0dc2d2691b53182b35f87f5ba4778f729cc344cc5071b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}