{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489783610",
    "entityType": "User",
    "nonce": "0x0260c26dd136fde751070064d7a5b6ec222666449dc2e0989e30ef3cf4e8f1e2",
    "signature": "0x33397aef1600fa7e2d57642e3af86b6d7bfac4774754b2735ce66518803343742e26ad50dc9bb031d6b73081b7d114b8841effc6e23cf77b64de3ddf1819f8891b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}