{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9faad4fd008a53c8fdfb94f25aa57368ab56de06c6027479eb243647707a95eb",
    "signature": "0x3d63074957e9e0ca1cfe0f1cd204cc64e3ef8662617c79a4de17d28948aed50c7a1f9294ce6097af9e853167f814db837fbf312be287f615dc99b42c6e7ef72f1c",
    "signer": "0x2B58D0E25Ee8743190c8Fe1875c801d083066b4B",
    "userId": "301554607"
  }
}