{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcff54716ee341e3e93c9730da43bcc5a166f910769a6aa8d577fd947eeb79958",
    "signature": "0x76cb9ace9717e0a623ce3325129c39db74d277fa39e8cc27b1151f37d074dff715c06babeac3d084efcbca8599ef23892ee6ee3f0dd87a5b091d549f3f13fb8a1b",
    "signer": "0x35e50F666BEE9D3DE7762F92778BB94bEE82b2BF",
    "userId": "908133358"
  }
}