{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "464100900",
    "entityType": "User",
    "nonce": "0x93ac349c0a7155920f8348c47c9476a051dca0eaa47344c69006f9d77ee9bae9",
    "signature": "0x18e6677abe5a2b0f9c4fb73495106821b639beecc29e6716660bfc7e1565f02d672c34d5d3be0aa0542e1e4377e68aa0a20f8ee9eba92fe6011d9283f94a36871b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}