{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5e52086158b6b58ea921726e66f2e28e46a58f770dbee47773f7ef54a158d0fc",
    "signature": "0x590649c76c2983d2332e8f9ec60ebe9048fcdb3a080ac997f003a1c6828c0a924027761073f8ad412afa496039bbc31c9ecba955c1c219c12640c81c3384dc0a1b",
    "signer": "0x31784e5a73d821Ab548128F495ED3eE660166A8B",
    "userId": "263189540"
  }
}