{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1438540",
    "entityType": "User",
    "nonce": "0x136ce29932de59a1d34859a18216ee8f5ee5360042d3efb804254f9ebdd9af95",
    "signature": "0x7538868e5012a37c13b26a2de3155777382f5267767c559ddc43b81652cd88ff33207876e23e65f5169ae75c9db7c89be1a8fa11815c9e79035bd6c94a11eb4e1b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}