{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4012f5c5b8c0af937a43f0243630a0b0a3a83b10ebd40b0ef46a7db291b49c03",
    "signature": "0x106a31cd58af6b8bd08414d84a567636890c3bd37c89a096cdf32bf6ef040cb90705a5a70f68c6058ba510509a2724e9059aa9efa463c8871c98168c5066146b1b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}