{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "405466",
    "entityType": "User",
    "nonce": "0x995686dc39ac219b889334d0ed0bf88097b0d9ff44a07134574c1ea3ee8547d4",
    "signature": "0xe6575f62a055c4a2aefefe10b9f4d3b0b2120d3d896db555e3367a6020f4a508168dc041accf584c2b2a807e034db90bfac656923234bc32039e161949c380171b",
    "signer": "0xa4A3F3480fA190Be98764c41851DD9969f3A80a2",
    "userId": "23420474"
  }
}