{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "533199925",
    "entityType": "User",
    "nonce": "0x7a1a73a819157fac796f7c91a34e638203814c61b6924112b3388676a4a6b7da",
    "signature": "0x98b657545e538beaeb1d6637ac0bdbe0079ddc1f834615f4f47e2a43f453efbb148ac03239b81eb2010e601a01a70323b9299859e7915257e1d4ffdd0af9622a1c",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}