{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "326897",
    "entityType": "User",
    "nonce": "0x3d2dfc8217eba6f0fbfb06453be38c0f411a1c19b6ab9522e97bcaec9e560947",
    "signature": "0xb54013bb9c6bc3e04ab2dc1db22549ef3c1f90fb27a3afaec2713b636a685f0d5c552acd6b5607c757f9b63d762aec43c7b616695b132f6d8fbb17b399e025361c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}