{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150975",
    "entityType": "User",
    "nonce": "0x632a754f0a9c2b909ddfa35aeac49d3433534447ec838797a7915d60aa9f95fa",
    "signature": "0xa4c923b81de75981493f633aa471471035e9194464f64a87bbae949e8e4899dc5d38fc72a8f408e03b861c63b31ac26556004427d92563ac75bac17784298c6d1c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}