{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1104",
    "entityType": "User",
    "nonce": "0x81157d8df8e0e534ce7eaabda7d8722d192b8b4f1d9e8b192fb7fc85e0f66e48",
    "signature": "0xcb1b0f7a36f83cc37e9078f60d81ac15e8e34c495dcb9385ccb2cc65ad547b634baf31bd31940f8310019df20a8a1930b9d50b0a67830ae623bddd8b2735f9211b",
    "signer": "0x881DC02014d371dB5F53a35eB20019b0253C7d40",
    "userId": "637221900"
  }
}