{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301884",
    "entityType": "User",
    "nonce": "0x743256c74a1fe3e60682dc51c82b6ec42c0aea256cf7f2db59c2810f34d34f68",
    "signature": "0x2e4d6058b1e4fa10eeb04d1ef2b1165de38c237f9ff3eba4c5d29aa933b5c92910c11b96b29887c74d9cf8af6ce6ff4cd2128000da3f3036878f4c193bc19acd1b",
    "signer": "0x101a0B7DCdaA192d9B07322E13792e3d5Cba1634",
    "userId": "689010269"
  }
}