{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "321073612",
    "entityType": "User",
    "nonce": "0x1559f780daef743e57fa4d519f218b4d2aa84f20db794323bdd7726b8afe1c67",
    "signature": "0xe0319eec70b124ed7ec62d9b28c4b2ac2d07c1b0a6137fc32f9f1412b96a58834a6d8e50859b531e6a50c489c9812ab1ef1596b87ac1fc0ec4aa5041d8a8167b1c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}